JPS5796875A - Heat sensitive recording method - Google Patents

Heat sensitive recording method

Info

Publication number
JPS5796875A
JPS5796875A JP17342580A JP17342580A JPS5796875A JP S5796875 A JPS5796875 A JP S5796875A JP 17342580 A JP17342580 A JP 17342580A JP 17342580 A JP17342580 A JP 17342580A JP S5796875 A JPS5796875 A JP S5796875A
Authority
JP
Japan
Prior art keywords
recording
picture
temperature
recording head
heat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP17342580A
Other languages
Japanese (ja)
Inventor
Yoshiaki Ishino
Shigeru Katsuragi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP17342580A priority Critical patent/JPS5796875A/en
Publication of JPS5796875A publication Critical patent/JPS5796875A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
    • B41J2/35—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads providing current or voltage to the thermal head
    • B41J2/355—Control circuits for heating-element selection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
    • B41J2/35—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads providing current or voltage to the thermal head
    • B41J2/355—Control circuits for heating-element selection
    • B41J2/36—Print density control
    • B41J2/365—Print density control by compensation for variation in temperature

Landscapes

  • Electronic Switches (AREA)
  • Facsimile Heads (AREA)

Abstract

PURPOSE:To prevent the increase in the temperature of a recording head and to prevent the degradation of picture quality when the temperature of the heat sensitive recording head is increased, by intermittently thinning the picture element recording on each line, and shifting the position of the picture elements to be thinned on the adjacent lines. CONSTITUTION:A current in a pulse shape is conducted through a plurality of resistors R1, R2, R3, and the like for picture element sections based on a picture signal. Coloring recording is performed on recording paper by the b heat of resistors for the picture element sections. In this heat sensitivity recording, a thirmistor 8, an amplifier 9, a thinning control circuit 10 and the like are provided. The temperature of the recording head recorded by the thirmistor 8 is imparted to the control circuit 10 through an amplifier 9. When the temperature is rising, the recording energizing of the cold number picture elements is inhibited, e.g., on one line, and the recording energizing of the even number picture elements on the adjacent lines is inhibited. In this method, the excessive increase in the temperature of the recording head is prevented and the phenomenon, wherein white streaks are generated on the picture and distinction is degraded, is avoided.
JP17342580A 1980-12-09 1980-12-09 Heat sensitive recording method Pending JPS5796875A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17342580A JPS5796875A (en) 1980-12-09 1980-12-09 Heat sensitive recording method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17342580A JPS5796875A (en) 1980-12-09 1980-12-09 Heat sensitive recording method

Publications (1)

Publication Number Publication Date
JPS5796875A true JPS5796875A (en) 1982-06-16

Family

ID=15960208

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17342580A Pending JPS5796875A (en) 1980-12-09 1980-12-09 Heat sensitive recording method

Country Status (1)

Country Link
JP (1) JPS5796875A (en)

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